1、- . MIL-C-70496 12 9797706 0355263 3 -/5-0.3 MIL-C-70496 (AR) 04 APRIL 85 MILITARY SPECIFICATION CIRCUIT CARD ASSEMBLY, LOGIC POWER SUPPLY This specification-is approved for use by the US Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the De
2、partment of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for manufacture and acceptance of the Logic Power Supply Circuit Card Assembly: 9355846, used in the Mortar Ballistics Computer (MBC): M23. Througout this specification this assembly is referenced as “supply” .
3、2 . APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specification and standards. Unless otherwise specified, the follawing specifications and standards of the issue listed in that issue of the Department of Defense index of Specifications and Standards (DoDISS) specified in the solicitation for
4、m a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-F-13926 - Fire Control Materiel; General MIL-1-4 56 07 - Inspection Equipment, Acquisition, Specification Governing the Manufacture and Inspection Maintenance and Disposition of STANDARDS MILITARY MIL-STD-10 5
5、 - Sampling Procedures and Tables for MIL-STD-109 - Quality Assurance Terms and Inspection by Attributes Definitions FSC 1220 Beneficid commente (recomendationa, additions. deletions) and my pertinent data which mzy be o$ use ia improving thii document should be addressed te: Conunander, US Army Arm
6、ament Research and Development Cenhr, Atm AMSUC-u, Dover, New Jsneg 07801-5001 by using the seif-addrersed Standardization Dociunent hparement Proposal (BD Form 1426) appearing oit time end of ohia docmwt tm by tetter. CONTAINS -y$- PAGES Provided by IHSNot for ResaleNo reproduction or networking pe
7、rmitted without license from IHS-,-,- MIL-C-70496 12 W 9999906 0355264 5 W MIL-C- 70 4 9 6 (AR) MIL-STD-4 54 - Electronic Equipment, General MIL-STD-1521 - Technical Reviews and Audits for MIL-STD-45662 - Calibration System Requirements Requirements for Systems, Equipments, and Computer Per -rams (C
8、opies of specifications and standards requixed by suppliexs in connection with specific procuzement functions should be obtained f.rom the procuring activity or as directed by the contracting officer.) 2.1.2 Other Goverment documents, drawings, and publications. The followinq other Government docume
9、nts, dxawings, and publications-form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation- for bids or .request for proposal. .DRAWINGS 9355846 - Circuit Card Assembly,. Logic Power Supply 11785850 - Computer Set, Ballisti
10、cs, Mortar: M23 PACKAGING DATA SHEETS 9355846 - Packaging of Circuit Card Assembly, Power Supply Logic: 9355846 (Copies of drawings and packaging data sheets requixed by manufacturers in connection with specific acquisition functions should be obtained rom the contracting activity or as directed by
11、the contracting officer.) 2.2 Order of precedence. In the event of a conflict between the text of this specification and the .references cited herein, the text of this specification shall take precedence. 3 . REQUIREMENTS 3,l Item definition. The logic power supply circuit card assembly shall provid
12、e the Mortar Ballistic Computer (MBC) with logic level supply voltages from various battery voltages or from unregulated external prime power. power up/down signals, law battery indicator, and automatic switchovex f.rom prime power to batte.ry sources. The connector contacts are listed in Table I. I
13、t also provides necessary 2 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I Connector J1 J1 J1 J1 P1 Pl Pl P1 Pa. P1 P1 P1 P1 P1 P1 P1 P1 P1 P1 P1 P1 P1 P1 PP P1 P1 XA2P1 XA2P1 XA2P1 XA2P1 XA2Pl XA2P1 XA2P1 XA2P1 XA2P1 XA2P1 XA2P2 XA2P2 XA2P2 XA2
14、P2 XA2P2 XA2P2 MIL-C-70496 12 m 7979906 0355265 7 m MIL-C-70496 (AR) TABLE I. Logic power supply circuit card assembly connect or contact s. Pin - Al A2 B1 B2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2Q 21 22 Al A2 A3 A4 B1 B2 B3 B4 Al A2 A3 A4 B1 B2 B3 B4 Type I I O I I O O O O O O O O I O N
15、ame - +28VR +28V +28VR +28V BAT+5V -5v GND GND BATPOS BATPOS +5v +5v GND GND GND RESET* PSFAULT* BATLOW OFF ELHI ON* ELON ELLO DSPON* +35v MC1200 +35v ELHI ELLO MC1200 ELON DSPONJ: ON* OFF PS+5V +5v SPOS PSRUN* BAT+5V GND GND PSFAULT* 3 Provided by IHSNot for ResaleNo reproduction or networking perm
16、itted without license from IHS-,-,-MIL-C-70q76 12 M 7799706 0395266 7 i- MTL-(2-78496 (AR) 3 . 2 Berf ormance. 3.2.1 General. The performance of the supply shall be in accordance with the.ollowing requirements. Logic levels shall be as specified in Table II. I TABLE II. Logic levels. Type of IC Lcgi
17、c Logic 0 Logic 1 CMOS and HCMOS 0.5 +/- 0.5 4.6 +/- 0.7 (VCC = 5.3V) volts DC volts DC 3.2.1.1 Power supply run. The supply shall turn on when XA2P2-A4 is connected to Pl-9 (GND) and shall turn of when disconnected. It shall be considered on when requirement 3.2.1.3 is met. 3.2.1.2 Neqative volts.
18、Pl-2 shall be minus 5.3 plus or minus 0.2 volts DC when referenced to GND. 3.2.1,3 Positive volts. Pl-7 shall be plus 5.3 plus or minus 0.2 volts DC when referenced to GND. 3.2.1.4 Output ripple. Both the +5V output (Pl-7) and the -5V output (Pl-2) shall have an AC component with a voltage level les
19、s than 0.2 volts peak %G y%! khat is at a frequency less than 1 megahertz. 3.2.1.5 Overload/shortcircuit protection. The +5V output (Pl-7) shall begin to decrease in voltage when the output current is at least 560 milliamperes and at most 900 milliamperes. When the +5V output is shortcircuited to GN
20、D, the output current shall be less than 1.7 amperes. at logic O for at least 150 milliseconds and at most 500 milliseconds after Pl-13 (PSFAULT*) switches from at logic O to a logic 1. conditions, Pl-12 shall stay a logic 1 or at least 100 microseconds and at most 500 microseconds after PSFAULT* sw
21、itches from a logic 1 to a logic O. 3.2.1.6 Reset. During turn on conditions, Pl-12 shall stay Then it will switch to a logic 1, During turn off Then it will switch to a logic O. 3.2.1.7 Power supply fault. Pl-13 shall be at logic O if Pl-7 (+5V) is less than 4.9 volts DC and shall be a logic 1 if i
22、t is greater than 5.1 volts DC. 3.2.1.8 Paver supply volts. XA2P2-Al shall be 5.6 plus or minus 0.,3 volts DC when referenced to GND. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70476 12 7779706 0355267 O W 7 MIL-C-70496 (AR) 3.2.1.9 Supp
23、ly positive. XA2P2-A3 shall be 9 volts DC minimum when referenced to GND with BATPOS at 10 volts DC. XA2P2-A3 shall be 30 volts DC minimum when referenced to GND with +28V at 32 volts DC. 3.2.1.10 Battery low. Pl-14 shall be at logic.1 if Pl-5 (BATPOC) is less than 10.7 volts DC and shall be at logi
24、c O if it is greater than 11.3 volts DC. 3.2.1.11 Common connector contact continuity. The resistance between the following respective connector contacts shall be less than 7.5 ohms. J1-A1 to Jl-A2 to Pl-1 to P1-3 to Pl-4 to Pl-5 to Pl-7 to P1-8 to P1-9 to Pl-10 to Pl-11 to P1-13 to Pl-15 to Jl-Bl 3
25、1-B2 XA2 P 2 -B 1 P1-4 Pl-9 Pl-6 P1-8 XA2P2-A2 Pl-10 Pl-11 XA2 P 2 -B 2 XA2P2 -B4 XA2P2-B4 Pl-16 P1-17 P1-18 Pl-19 Pl-20 Pl-21 Pl-22 XAeP2-B2 . to XA2PI-A2 to XA2Pl-A3 to XA2P1-B1 to XA2Pl-A3 to XA2P1-B2 to XA2Pl-Al to XA2P2-A4 to XA2P2-B3 3.2.2 Physical characteristics. The physical characteristics
26、 shall be as prescribed by the drawings, specifications, and QAPs. 3.2.3 Reliability. When specified in the contract, a special sample shall be subjected to reliability testing. The manufacturing and production techniques employed in the fabrication of the supply shall not degrade the inherent relia
27、bility. The inherent reliability shall not be less than 285,243 hours Mean Time Between Failures (MTBF). (See 4 and 6) 3.3 Environmental. The supply shall meet the requirements specified herein unless otherwise specified. 3.3.1 Room ambient temperature. The requirements of this specification shall b
28、e met with the supply thermally stabilized at room ambient temperature of +16OC to +32OC (+60F to +go%), unless otherwise specified in the requirements paragraph. 3.3.2 Environmental stress screen (ESS) temperature. The supply shall meet the requirements of 3.2.1.1 and 3.2.1.11 inclusive, after havi
29、ng been exposed to a minimum of ten temperature cycles at temperatures of -57OC and +71oC (-71F and +1600) . 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70476 12 7779706 0355268 2 MIL-C- 70 4 9 6 (AR) 3.3.3 Environmental stress screen (ES
30、S) vibration. The supply shall meet the requirements of 3.2.1.1 and 3.2.1.11 inclusive, after having been subjected to a random or pseudorandom vibration which includes frequency content from 100 Hz to 1000 Hz and up to a 3g RMS in two axis for a period of 10 minutes plus or minus 15 seconds. 3.4 Fa
31、brication. The supply shall be manufactured in accordance with drawing 9355846. 3.5 First article. When specified in the contract, a sample .shall be subjected to first article inspection (See 4 and 6). 3.6 Workmanship. The workmanship requirements of MIL-F-13926 and MIL-STD-454 shall be met. All co
32、mponents shall be fitted properly and firmly in their respective positions. All electrical connections shall be mechanically secure and electrically sound. There shall be no evidence of corrosion, burrs, roughness, sharp edgesor other defects which could adversely affect its use or suitability for t
33、he purpose intended. 3.7 Materials. Materials shall be in accordance with drawings, material specifications and general specifications forming a part of this specification. 4. QUALITY ASSURANCE PROVISIONS 4,l Responsibility for inspection. Unless otherwise specified in the contract or purchase order
34、, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein
35、, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.P General provisions. ,The component and sub
36、assembly inspection requirements of MIL-F-13926 and MIL-STD-454 form a part of the Quality Assurance Provisions of this specification. Definitions of inspection terms shall be as listed in MIL-STD-109. 4.2 First article (initial production) approval. The requirement for first article approval and th
37、e responsibility (Government or contractor) for first article testing shall be as specified in the contract. The sample for first article approval test shall consist of three (3) supplies plus three (3) each o all items covered by QAP. The three supplies shall be tested as specified herein for all t
38、he requirements of this specificakion- 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-70476 12 7779706 0355267 4 W MIL-C-70496 (AR) The items covered by QAP shall be tested, as specified thereon, for all characteristics delineated on the QA
39、P. The samples shall be manufactured in the same manner, using the same materials, equipment, processes, and procedures as will be used in the production of the balance of the contract quantity. All parts and materials, including packaging and packing, shall be obtained from the same source of suppl
40、y as will be used in the production of the balance of the contract quantity. 4.2.1 Government testing. When the Government is responsible for conducting first article approval tests, the contractor prior to submitting the sample to the Government, shall inspect the sample to insure that it conforms
41、to all requirements of the contract and submit a record of this inspection with the sample, including certificates of conformance for all materials. 4.2.2 Contractor testing. When the contractor is responsible for conducting first article approval tests, the sample shall be inspected by the contract
42、or for all the requirements of the contract. The sample and a record of this inspection, including certificates of conformance for all materials, shall be submitted to the Government for approval. The Government reserves the right to witness any or all of the contractors inspections. 4.3 inspection
43、provisions. 4.3.1 Submission of product. Unless otherwise specified by the contracting officer, inspection lot size, lot formation, and presentation of lots shall be in accordance with Submission of Product“ provision of MIL-STD-105. 4.3.2 Examination and tests. 4.3.2.1 Components and subassemblies.
44、 All components and subassemblies shall be inspected in accordance with the inspection provisions contained in Quality Assurance Provisions (QAPs) listed in the Technical Data Package (TDP). In the absence of QAPs, the applicable Quality Assurance Provisions of MIL-F-13926 shall apply. 4 . 4 Samplin
45、q . 4.4.1 Environmental/performance. The supply shall be inspected to the requirements in Table III. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70476 12 M 7779906 0355270 O M MIL-C-70496 (AR) TABLE III. Classification of defects. - No. Cha
46、racteristics 100% Inspection 1. 2. 3. 4. 5. 6. 7. 8. 9. 18 * 11 . 12 . 13 . Power supply run Negative volts Positive volts Output ripple Overload/shortcircuit protect ion Reset Power supply fault Power supply volts Supply positive Battery low Common connec tor ESS temperature ESS vibration contact c
47、ontinuity MAJOR: AOL 1.0% Defective Requirement Test Procedure 3.2.1.1 4.6.3.1 3.2.1.2 4.6.3.2 3.2.1.3 4.6.3.3 3.2.1.4 4.6.3.4 3.2.1.5 4.6.3.5 3.2.1.6 4.6.3.6 3.2.1.7 4.6.3.7 3.2.1.8 4.6.3.8 3.2.1.9 4.6.3,9 3 . 2 . 1.10 4.6.3.10 3.2.1.11 4.6.4 3.3.2 4.6.1 3.3.3 4.6.2 101. Workmanship 3.6 4.6.5 4.4.2
48、 Special samplinq. One supply shall be selected at random as a special sample from each lot or each 100 produced which eve% occurs first. The sample shall meet the requirements and tests in Tabe IV. TABLE IV. Classification of defects. - No. Character istics 201. Fabrication 202. Materials Requireme
49、nt Test Procedure 3.4 Applicable Drawing/ 3.7 Applicable Drawing/ Visual Visual NOTE: The tests in Table IV shall be conducted at room ambient temperature (as specified in 3.3.1) . 4.4.3 Failure of sample. Should any one item of a special. sampling fail to meet the specified test requirements, acceptance of the represented inspection lot will be suspended by the Government until necessary correctionS have b
